package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.Result;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

/**
 * 菜类
 */
@RestController
@RequestMapping("/dish")
@Slf4j
public class DishController {

    @Autowired
    private CategoryService categoryService;

    @Autowired
    private DishFlavorService dishFlavorService;

    @Autowired
    private DishService dishService;

    //新增菜品

    /**
     * 新增菜品
     * @param dishDto
     * @return
     */
    @PostMapping
    public Result<String> save(@RequestBody DishDto dishDto){
         log.info(dishDto.toString());

         dishService.saveWithFlavor(dishDto);
         return Result.success("新增菜品成功");

    }

    //菜品信息分页查询

    /**
     * 菜品信息分页查询
     * @param page
     * @param pageSize
     * @param name
     * @return
     */
    @GetMapping("/page")
    public Result<Page> page(int page ,int pageSize ,String name){
        //构造分页构造器对象
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();

        //条件构造器
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();

        //添加过滤器条件
        queryWrapper.like(name != null , Dish::getName,name);
        //添加排序条件  根据修改时间 降序排列
        queryWrapper.orderByDesc(Dish::getUpdateTime);

        //执行分页查询
        dishService.page(pageInfo,queryWrapper);

        //对象拷贝
        BeanUtils.copyProperties(pageInfo,dishDtoPage,"records");

        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item)->{
            DishDto dishDto = new DishDto();

            BeanUtils.copyProperties(item,dishDto);

            Long categoryId = item.getCategoryId(); //分类id

            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);

            if (category != null){
                String categoryName = category.getName();

                dishDto.setCategoryName(categoryName);
            }

            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);


        return Result.success(dishDtoPage);
    }

    /**
     * 根据id查询单个数据
     * @param id
     * @return
     */
    @GetMapping("/{id}")
    public Result<DishDto> get(@PathVariable Long id){
        DishDto dishDto = dishService.getByIdWithFlavor(id);

        return Result.success(dishDto);
    }

    /**
     * 修改数据
     * @param dishDto
     * @return
     */
    @PutMapping
    public Result<String> update(@RequestBody DishDto dishDto){
        log.info(dishDto.toString());

        dishService.updateWithFlavor(dishDto);

        return Result.success("修改菜品成功");

    }

    /**
     * 完整得菜品查询
     * @param dish
     * @return
     */
    @GetMapping("/list")
    public Result<List<DishDto>> list(Dish dish) {
        //构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null ,Dish::getCategoryId,dish.getCategoryId());

        //添加条件 ,查询状态为1 (起售状态) 的菜品
        queryWrapper.eq(Dish::getStatus,1);
        //添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);

        List<DishDto> dishDtoList = list.stream().map((item) ->{
            DishDto dishDto = new DishDto();
            //拷贝信息到 dishDto
            BeanUtils.copyProperties(item,dishDto);
            //分类id
            Long categoryId = item.getCategoryId();
            Category category = categoryService.getById(categoryId);

            if (category != null){
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId,dishId);
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());
        return Result.success(dishDtoList);
    }

    /**
     * 修改菜品状态
     * @param status
     * @param ids
     * @return
     */
    @PostMapping("/status/{status}")
    public Result<String> update(@PathVariable int status , @RequestParam List<Long> ids){
        log.info("status : {}",status);
        log.info("ids : {}",ids);

        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.in(Dish::getId,ids);

        List<Dish> dishes = dishService.list(queryWrapper);
        dishes = dishes.stream().map(dish -> {
            dish.setStatus(status);
            return dish;
        }).collect(Collectors.toList());

        dishService.updateBatchById(dishes);
        return Result.success("修改成功");
    }

    /**
     * 根据id 删除菜品
     * @param ids 前端传过来需要删除得菜品id
     * @return
     */
    @DeleteMapping
    public Result<String> delete(@RequestParam List<Long> ids){
        dishService.deleteWithFlavor(ids);
        return Result.success("删除成功");
    }

}
